GB1092439A - Pulse generator - Google Patents

Pulse generator

Info

Publication number
GB1092439A
GB1092439A GB150666A GB150666A GB1092439A GB 1092439 A GB1092439 A GB 1092439A GB 150666 A GB150666 A GB 150666A GB 150666 A GB150666 A GB 150666A GB 1092439 A GB1092439 A GB 1092439A
Authority
GB
United Kingdom
Prior art keywords
thyristors
capacitor
pulses
loop
transmitting loop
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB150666A
Inventor
Maarten Geleynse
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Smiths Detection Toronto Ltd
Original Assignee
Barringer Research Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Barringer Research Ltd filed Critical Barringer Research Ltd
Priority to GB150666A priority Critical patent/GB1092439A/en
Publication of GB1092439A publication Critical patent/GB1092439A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/72—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region
    • H03K17/73—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region for dc voltages or currents

Landscapes

  • Generation Of Surge Voltage And Current (AREA)

Abstract

1,092,439. Semi-conductor pulse generating circuits. BARRINGER RESEARCH Ltd. Jan. 12, 1966, No. 1506/66. Heading H3T. In a circuit, particularly for feeding spaced half-sine pulses to the transmitting loop 12 of a geophysical prospecting apparatus, a capacitor 10 is alternately charged and discharged via the loop 12 so that the energy stored in capacitor 10 during one pulse is added to the next pulse. As shown, capacitor 10 is first charged by triggering thyristors 15, 16 from transformer 25, the thyristors becoming non-conductive after one half cycle at the natural frequency of details 10, 12. After a predetermined interval, thyristors 17, 18 are triggered from transformer 26 giving a half-cycle of current of opposite polarity. The oscillatory circuit 10, 11, 12 is under-critically damped so that the current pulses only reach a maximum equilibrium voltage after several cycles. The triggering pulses for transformers 25, 26 may be derived from 250 c/s. multivibrator 21 via a frequency divider 22 and differentiating amplifiers 23, 24. Uni-polar pulses may be obtained by connecting the transmitting loop 12 in series with the fuse 14. In Fig. 5 (not shown), the four thyristors are arranged in a bridge having the supply 13 connected across one diagonal and capacitor 10 connected across the other. The transmitting loop is sequentially connected across capacitor 10 via one (or two oppositely directed) thyristors.
GB150666A 1966-01-12 1966-01-12 Pulse generator Expired GB1092439A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB150666A GB1092439A (en) 1966-01-12 1966-01-12 Pulse generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB150666A GB1092439A (en) 1966-01-12 1966-01-12 Pulse generator

Publications (1)

Publication Number Publication Date
GB1092439A true GB1092439A (en) 1967-11-22

Family

ID=9723169

Family Applications (1)

Application Number Title Priority Date Filing Date
GB150666A Expired GB1092439A (en) 1966-01-12 1966-01-12 Pulse generator

Country Status (1)

Country Link
GB (1) GB1092439A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2123222A1 (en) * 1971-01-29 1972-09-08 Alsthom

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2123222A1 (en) * 1971-01-29 1972-09-08 Alsthom

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